the traditional language of the region of Frisia in north-west Europe, closely related to German, Dutch and English 弗里西亚语(欧洲西北部弗里西亚地区的传统语言,与德语、荷兰语和英语属同一语系) Word Originlate 16th cent.: from Latin Frisii ‘Frisians’ (from Old Frisian Frīsa, Frēsa) + -ian.